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DPChallenge Forums >> Business of Photography >> Help!! Fluorescent lights
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07/23/2008 01:52:53 AM · #1
The building I want to rent to start my studio is perfect except that it has fluorescent lighting in every room. I know this will cast a funky tone, what should I do? I could use my editing software to even out the tone but I really don't want to have to do that to EVERY single photo, any help would be appreciated.

Message edited by author 2008-07-23 01:53:14.
07/23/2008 01:57:41 AM · #2
When you set your White Balance, either use the fluorescent setting (some have more than one) or, better yet, use a white/gray card and set a custom White Balance under the actual ambient light. That yould compensate for the coloration of the lights, the latter technique will no matter what mixture of lights you have. Try to shoot the card as near to the subject's position as possible.

Or you can spend $50-5000 on lights and turn of the fluorescents ... ;-)

Message edited by author 2008-07-23 01:58:51.
07/23/2008 01:57:48 AM · #3
Remember your steps and make it an action and batch process your images all at once.... Or replace all the lights? I really have no idea lol sorry... Get strobes with modeling lights and just use those without the lights on? sorry for no help from me really lol...
07/23/2008 02:00:44 AM · #4
My first thoughts are:

1. Just turn them off when shooting
2. Cover them with a minusgreen gel sheet (if possible)
3. Replace the lighting with something that produces little to no color cast (i.e. daylight balanced)

@Patrick_R, you definitely don't want to have to fix it in post. If I recall the typical fluorescent light can produce different color casts depending on when you catch it's flickering so unless you plan on using the same shutter speed for all of your shots creating a one-size-fits-all photoshop action would be problematic.

Message edited by author 2008-07-23 02:09:43.
07/23/2008 03:55:56 AM · #5

You could remove the bulbs from the fixtures - easy and it turns them off!
You could invest in daylight balanced bulbs.

if you keep your exposure 3 or more stops above the ambient light then it won't affect the exposure.
07/23/2008 04:53:17 AM · #6
Unless you're dragging your shutter and shooting wide open, it's not going to affect a typical strobed exposure (are you shooting with strobes?).
07/23/2008 08:15:26 AM · #7
As mentioned, if you are shooting with strobes and your exposure is well above room light levels, it's no problem. Long exposures (more than 1/30s) done with a manual white balance also should be fine. Exposures in the 1/60 and faster range without a flash may not get the full benefit of a manual white balance. It has to do with whether the lights are all on the same electrical "phase."
07/23/2008 11:00:57 AM · #8
first, set your camera to daylight and take a picture. If there is a green (or other) cast, you have to do something about it.
Also, do you have large windows and/or lots of sun coming in?

Mixed lighting is hard to correct in PS -- for example, the main and fill light may be 6500K strobes, but the shadow areas may pick up more of the fluorescent light.

I suggest that you buy natural sunlight balanced fluorescent lights--look for the color temp to be at least 5000 degrees K, and the CRI to be above 90. Then shoot a white balance target with your camera set to daylight WB using only the fluorescent. Compare that to a similar shot (camera set to daylight WB) but using your strobes for the only light. Gel the fluorescents if needed.

Some fluorescents (like cool white) may add lots of green, which will show up in shadowed areas. The main and fill lights may not reach all these areas. So some shadows may be greener than others. And I have noticed that some skin types pick up green much more readily than others -- people from Mediterranean areas often have "olive" skin, and this really picks up the green cast from fluorescent lights, while a redhead or blonde may not show any green in the same light.

Message edited by author 2008-07-23 11:05:35.
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